11201220212021 has 8 divisors (see below), whose sum is σ = 12805714968384. Its totient is φ = 9597805565760.

The previous prime is 11201220212009. The next prime is 11201220212071. The reversal of 11201220212021 is 12021202210211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11201220212021 - 2¹⁴ = 11201220195637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201220212071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270005300 + ... + 270046781.

It is an arithmetic number, because the mean of its divisors is an integer number (1600714371048).

Almost surely, 2^{11201220212021} is an apocalyptic number.

It is an amenable number.

11201220212021 is a deficient number, since it is larger than the sum of its proper divisors (1604494756363).

11201220212021 is an equidigital number, since it uses as much as digits as its factorization.

11201220212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540055051.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 11201220212021 its reverse (12021202210211), we get a palindrome (23222422422232).

The spelling of 11201220212021 in words is "eleven trillion, two hundred one billion, two hundred twenty million, two hundred twelve thousand, twenty-one".